Overseaming sewing-machine and throat-plate and spreader-guard therefor.



R. G. WOODWARD. OVERSEAMING SEWING MACHINE AND THROAT PLATE AND SPREADER GUARD THEREFOR.

APPLICATION FILED DEC. 3. 1902.

Patented May 26, 1914.

I 3] uaemtoz CbLuMBlA PLANOGRAPH co.. WASHINGTON. D.'c.

UNITED s'rATEs PATENT onnron.

RUSSEL G. WOODWARJ), OF WAUKE-GAN,

ILLINOIS, ASSIGNOR TO UNION SPECIAL SEWING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters Patent.

Patented May 26, 1914.

Application filed December 3, 1902. Serial No. 133,735.

b all whom it may concern Be it known that I, RUSSEL G. VVoonwnnn, a citizen of the United States, residing at Naukegan, in the county of Lake,

State ofv Illinois, have invented certain new and useful Improvements in Overseaming Sewing-Machines and Throat-Plates and SpreadenGuards Therefor, of which the following is a description, reference being had to the accompanying drawing and to the letters and figures of reference marked thereon.

The present invention relates to sewing machines, and particularly to an improvement in overseaming machines.

In its particular embodiment herein shown, the invention is applied to overseaming machines of the type known as the Union Special single interlock machine, illustrated in numerous applications for Letters Patent filed by myself, either individually or jointly with others, but reference for a complete understanding of the invention may be had to the patent granted to Lansing Onderdonk and myself Nov. 27, 1906, No. 837,106.

The present invention includes a special" construction of throat plate to be applied to said machine, and used when the hemming of stockings or tubular work of like nature, is to be sewed on the machine, and consists in the particular construction of the throat plate, and also includes a guard attached to the under side of the throat plate to guard the spreader, and prevent the hooked portion thereof from catching into the knitted web from which the stocking or other garment is formed.

The invention is illustrated in the accompanying drawings, in which,

Figure 1 is a side view, showing the work plate, the throat plate secured thereto, and the cooperating stitch-forming elements; Fig. 9. is a top view of the throat plate; and Fig. 3 is a sectional perspective view of the same illustrating the spreader guard, Fig. 1 is a plan view of the supplemental cloth plate. Fig. 5 is a perspective view showing the work support, throat plate and guard or casing for the spreader.

In these drawings, the work plate A is of the form usually present on the Union Special single interlock machine, and the throat plate 7, is of special construction for use in the hemming of stockings and tubular work of llke character. It has an opening 8 forming an extension of the opening 8 in the work plate, said two openings allowing for the passage of the spreader S, from be- .low, up over the edge of the fabric being sewed, to carry the loop of needle thread into position to be engaged by the looper L. This throat plate has the usual openings for the passage of the feed dogs, and projects beyond the plane of the body of the bed plate, being rounded, as shown at the back portion 9, and having its front portion 10 made square. It forms a fiat horn or support, over which small tubes may he slipped, and is designed to be used in connection with the supplemental cloth plate portion 14, which, when secured to the bed plate, makes the same a continuous fiat bed plate.

To the bottom of the throat plate is attached a metal guard or casing 15, having the cut out portion 16. The walls of the casing act as a guard for the spreader S,

said spreader moving in a plane included within the limit of the casing, and at its extreme backward part being covered by the casing, thus preventing the spreader hook from catching in the knit fabric.

, It will be noticed that by making the front end of the throat plate square, it acts as a guide for the stockingover the throat plate, for if it were made round, the stocking would slip off, and it would be almost impossible for the operator to guide the work. The back portion of the throat plate is rounded off for the purpose of making the stockings slip off readily.

As shown in dotted lines in Fig. 2, thetubular fabric is inserted over the projecting work plate, and is led in substantially a straight line as indicated at c to the stitching point, after which the stitched edge is deflected so as to pass over the rounded off edge of the work support at b and then the fabric passes underneath the projecting plate and up over the edge at the point a.

It will readily be seen that the straight portion as above noted, prevents the tubular garment from slipping from the projecting plate while the cut away portion in rear of the needle serves to crowd the edgeof the material toward the front of the machine, thus making the distance between the point a, where the fabric passes over the projecting plate to the point 6 where it leaves the projecting work plate, much shorter than the distance from the point a to apoint in the rear edge of the projecting plate located in the line of feed. Thus it is that much smaller tubular articles may be sewed than heretofore.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A sewing machine, including in combination, a cloth-supporting plate, having openings for the needle and feed dog, and means for supporting said plate, said clothsupporting plate projecting from its supporting means, whereby small tubular articles may be slipped over the same and stitched, the front edge of said cloth plate being formed so as to extend outwardly substantially at right angles to the line of feed movement, and thus prevent the fabric being led to the stitching mechanism from' slipping oil the said cloth-supporting plate,-

the rear edge of said cloth-supporting plate being rounded oif to a point substantially in rear of the feed, whereby the tubular article will be stripped from said work support after passing the feed.

2. In a sewing machine provided with a needle and looper, and with a spreader adapted to reciprocate from a point beneath the bed plate to a point above the same, to carry a loop of needle thread into position to be engaged by the looper, a throat plate forming a horn or projection over which the article to be sewn may be slipped, said throat plate being provided with a guard for the spreader on its under side, said guard forming a casing having walls and a cutout portion, the wall of said casing preventing the hook of the spreader from catching in the material around said horn.

A throat plate for sewing machines, having means whereby said throat plate may be attached to the machine so as to form a horn or projection over which the articles to be sewed may be slipped, said throat plate being provided on its under side with a guard to divert the fabric during its passage through the machine, said guard forming a casing having a cut-out portion, the Walls of said casing being adapted to prevent the stitch-forming members from catching the material extending around said throat plate.

In testimony whereof I aflix my signature, in presence of two witnesses.

RUSSEL G. VVOODl/VARD.

\Vitnesses Cnns'rnn McNEIL, CARRIE RASMUSSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington. D. C. 

